Motor-controller.



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6. E. KRAUSE 8|. A. L. BOLEN.

MOTOR CONTROLLER.

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IOTOR CONTROLLER.

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No. 7I2,549. Patented Nov. 4, I902.

Ii. E. KBAUSE & A. L. BOLEN.

MOTOR CONTROLLER.

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No. 7I2,549.

G. E. KRAUSE &. A. L. BOLEN.

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G. E. KRAUSE 6. A. L. BDLEN. ROTOR CONTROLLER.

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IOTOR CONTROLLER.

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Patented Nov. 4. I902.

No. 7I2,549.

G. E. KRAUSE 8|. A. L; BOLEN.

IOTOR CONTROLLER.

Appliention filed Oct. 7, 1901.

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(No Model.)

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UNITED STATES PATENT OEFIcE.

GEORGE E. KRAUSE AND ARTHUR L. BOLEN, OF INDIANAPOLIS, INDIANA.

MOTOR-CONTROLLER.

SPECIFICATION forming part of Letters Patent No. 712,549, dated November 4, 1902.

Application filed October 7,1901. Serial No. 77,929. (No model.)

To aZZ whom it Hwy con/own:

Be it known that we, GEORGE E. KRAUSE andARTI-IURL.BOLEN,ofIndianapolis,county of Marion, and State of Indiana, have invented a certain new and useful Motor-Controller; and we do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, in which like letters refer to like parts.

Our invention relates to an improved apparatus for and a system of varying the speed and direction of rotation of the armatures of.

electric motors.

The system consists of a plurality of fixed resistances,the connections therebetween and between the resistances and the armature being changed, so as to arrange them in series groups or multiple groups or series and mul- 2o tiple groups, or vice versa, and thereby increase or decrease the am pere-carrying capacity to the motor, all of the resistances being at any time in the circuit.

' In carrying out our system we provide amovable or rotatable drum carrying a plurality of terminals which maybe shifted into engagement with several series of stationary terminals,which in turn are bridged together in different groups to accomplish the desired result.

The system also involves the use of the mo- 5 showing the shifting terminal boards, rheo-' static resistances, two motors, the motor-cutout switch, the reversing-switch, the brakeswitch, and wiring.

rotating drum and adjacent parts. Fig. 1

illustrates details of the bearing for the drum.

Fig. 5 a detail of one of the roller-tcrmi- Fig. 6 is a diagrammatical view shownals.

\Ve have also provided a double motor-cut- Fig. is a plan of the ing the system of wiring on the back of the cylinder which cooperates with the drum. Fig. 7 is a development of the internal surfaces of one-half of the cylinder. Fig. 8 is a plan of the controller. Fig. 9 is a detail of the brake-switch. Figs. 10 and 11 are details of one of the plate-terminals on the inside of the drum. Fig. 12 is a plan of the motor-cutout-switch plate.

In the drawings, IC-indicates a controllerbox,within which is mounted a cylinder composed of two semicylindrical portions K and R, the interior of section B. being formed of insulating material.

Arranged on the internal surfaces of section K is a plurality of terminal plates, which plates are arranged in vertical series a, I), c, d, e, f, g, and h, more or less, as may be de sired, according to the number of resistances to be used, and in horizontal series 175, 172, 86, 5, 10, 13, 19, 22, 28, 31, 37, 40, 46, 49, 55, 58, 61, 69, 1, 90, 96, 99, 105,108,111,117, 123, 126, 132, 135, 1&1, 144, 150, 153, and 9, beginning at the bottom of Fig. 7. Terminals 175, 172, 86, 1, 90, and 9 are, however, extended across the entire vertical series, so that each is a continuous plate, while the vertical series of the remaining terminals are separated by insulating strips, as shown, which are brought to the same level as the terminals. Each of the small terminals is provided with a single pin and binding-post, which extends through the cylinder K,while each of the long terminals is provided with as many pins and binding-posts as there are vertical series of terminals, and the said binding-posts are arranged upon the back or outside of the cyliuder K in vertical series a b c d cfg h, (see Fig. 6,) corresponding to the vertical series of terminals in Fig. 7, and in horizontal series 171, 173, 87, 6, 11, 12, 20, 21, 29, 30, 38, 39, 17, 48, 56, 57, 65,16, 0, 89,97, 98, 106, 107, 115, 116, 121, 125, 133, 131, 142, 143, 151, 152, 10'.

In row a, Fig. 6, suitable bridge-wires connect the following binding-posts in pairs: 174 173,11 12, 20 21,115 116,124 125, 133 131, 142 143,151 152. Terminal ais connected to 0 and a with h In row 7) the following terminals are bridged in pairs: 171 173, 11 12, 20 21, 29 30, 38 39, e7 48, 56 57, 97 98, 106 107, 115 116, 121 125,

ICO

In row 61 the following terminals are bridged together in pairs: 174173, 1112, 20 21, 29 30, as 39, 97 98, 106 107, 115 116, 124 125. Terminals d", (1 (1 and d are connected together and to (2 e", e 6 and e", and (Z d 61 01 are bridged together and to e 133 112 151 and 10' In rowe the following terminals are bridged together in pairs: 174 173,1112, 20 21, 29 30, 97 98, 106 107, 115 116. Terminals 6", e 6

6 and 6" are bridged together and to f f f 7 f and e e e e e are bridged together and to f f f f 'fland f In rowf tertninals 174 173, 11 12, 2021, 97 98, 106 107 are bridged together in pairs, terminals f f f f f f are bridged together and to g g, Q 9 g, g. and g and ter- "11113.18f f f f f are bridged togebherand 010129115, 124 19s 142 151 and 10' In row g terminals 174 173, 11 12, 9798 are bridged to ether in pairs, terminals g g 9 39 9 (1 are bridged together and to 71 71 71 71 71 ,71 and h and terminals g 107 116 125 134 14s 152 are bridged ft t 7 98 7 107 hllfi 7 125 7 134 7 143 h152 In row h terminals 174 173-and 87 89 are bridged together in pairs, terminals 71, 72,

71, h TL, h, 71 and 71 are bridged together, and terminals 7L9, 71. h 71 11 71 h and h are bridged together.

'lui'nin; now to Fig. 3, we mount inside of the cylinder formed by sections K and R' a rotatable drum 800, which carries at opposite sides two terminal boards M and S, each of which is' spring-hinged at 802 on a vertical axis to the drum 800. Secured to each terminal board is a plurality of terminal plates 803, each provided with a slot 806 and fastened' to the board, so as to be radially adf justa'b'le thereon. Each board 803 carries at itsouter end a spring-hinge 805, to which is secured a contact-roller. Each of the terminals thus formed will be hereinat'ter designated' by a separate numeral. 7

Turning now to Fig. 2, which shows the;

terminal boards M and S with the attached terminals diagram matioal ly, beginning at the topof board S, which corresponds with the bottom of Figs. 6 and 7, we provide a series of roller tertninals 87 4 9 14 18 23 27 32 36 41 44 50 54 59 0:; e8 0' 91 95100 101 109 113118 122127 13313014014514!) 154 L58. Mounted witliin the drum 800 is a plurality of resistances 7, 16,25, 31, 43, 52, 01, 70, 99, 102,111, 120, 129,138,147, and 156. Resistance 7 is bridged in between terminal rollers 4 and 9 by wires 3 and 8, respectively, resistance 16 together between rollers 14 and 18 by wires 15 and 17, resistance 25 between rollers 23 and 27 by wires 24 and 26, resistance 34 between rollers ers and 104 by wires 101 and 103, resistance 111 between rollers 109 and 113 by wires and ,112, resistance between rollers 118 and 122 by wires 119 and 121, resistance 129 between rollers 127 and.131 by wires 128 and 130, resistance 138 between rollers 136 and by wires 137 and 139, resistance 147 between rollers and 149 by wires 146 and I 148, resistance 156 between rollers 154 and 158 by wires and 157.

Terminal board M is provided with terminal rollers 173 87 4 9 14 18 23 27 32 36 41 44 50 54 59 63 68 0 91 95 100 104 109' 113 118 122 127 131 136 140 145 149 158 corresponding to the terminal rollers having similar numbers of board S; Roller 173" is connected bywire to roller 87 and rollers 4,'

9', 14, 18, 23, 27, 32, 36, 41, 44, 50, 54, 59, 63, 68, 0, 91, 95, 100, 104, 109', 113, 118, 122, 127, 131, 139', 140, 145, 149', 154, and 158 are respectively connected to wires 3, 8, 15, 17, 24, 26, 33, 95, 42, 43, 51, 53, 00, 62, 09,71, 92, 9 1, 101, 103, 110,112, 119,121, 128, 130, 137, 139, 146, 148, 155, and 157. Roller 87 is bridged to roller 4. l

The motor-cut-out switch shown in Figs. .12 and 2 consists of a pivoted head S which carries a pair of switch-plates S and 5*, said plates being insulated from each other by suitable insulating-strips S A suitable operating-handle is secured to head S by means of a bar 8 which lies between the two switchplates. Arranged in position to receive the fingers of plate S are terminals X and Z, while similar terminals X and Z are arranged to receive the fingers of plates 8*, the spaces between the two pairs of terminals beingsuch that by swinging the switch-plate S upon its pivot either pair of fingers may be withdrawn from engagement with their coiiperating teroppositely-extending arms 80 and 80", of in-' snlating material. Arm 80 carries fourterminals 400403 406 407 andarranged in position to be engaged by said terminals are terminals 401 402 404 405 respecti vely,terminals 401 and 402being bridged and terminals 404 and 405 being bridged. Also arranged to be engaged by terminals 400, 403, 407, and406, respectively, are terminals 300, 301, 302, and 303, respectively, terminals 300 302 and 301 303 being bridged in pairs. Arm 80" carries four terminals 79, 81, 83, and 84, proper reversing-terminals being arranged to be engaged by said terminals,as shown in the upper righthand corner of Fig. 2.

In Fig. 7 terminals 5 and 90 are connected through the back of the cylinderwith a trolley or other positive feeder-line,while terminals 172, 1, and 9 are grounded or connected to the negative feeder.

In Fig. 1 we have shown sixteen different groupings of the resistances 7 16 25, 820., (shown in Fig. 2,) and the tield-coils and armatures of both motors. Each resistance-coil is indicated by a short oblique line, the field by a zigzag line F, and the armature of each motor indicated at A. Grouping 1 in Fig. 1 is obtained when drum 800 is shifted so as'to bring the roller-terminals of board S into ongagement with row a of the terminals shown in Fig. 7, and in this grouping the two motors are arranged in series, each motor having half the resistance in series with it, the circuit being as follows: For this group switch- S is brought to its medial position, so as to connect terminals X Z and X Z; from the feeder to terminal a, thence to plate 5, to roller 4, Fig. 2, (in tracing the circuits further we will pass in succession from Fig. 2 to Fig. 7, thence to Fig. 6, thence to Fig. 7, thence to Fig. 2, 850;) from roller 4 through 3, 7, 8, 9, a a a, a. 14, 15, 16, 17, 18, a, a (13, (L22, 23, 24, 25, 26, 27, a, a (1 a, 32, 33, 34, 35, 36, (1 a, a a 41, 42, 43,

43, 44, a, a, a, a 50, 51, 52, 53, 54, 61

a, a, a 59, 60, 61, 62, 63, a, a, a a, 68, 69, 70, 71, 72, X, s", Z, 74, fiQld-COllS 75, 7o, 77, 78, wire 79, 79', 81, 81, armature 82, wire 83, 83, 84', 84, 87", 86, Fig. 7, 87, wire 88, Fig. 6,89, 90, 91,92, 93, 94, 95, a, 0, (1 a, 100, 101, 102, 103,104,a ,a ,a 6 109, 110, 111, 112, 113, a a a a 118, 119, 120, 121, 122, a a 66 72 2127 128, 129, 130, 131, a a a (7 136, 137, 138, 139, 140, a a a ,a ,145, 146,147, 148, 149, a a a a 154, 155, 156, 157, wire 158, terminals X Z, field-coils 161, 162, 163, 164, wire 165, terminals 400, 401, 402, 403, wire 166, armature 167, wire 168, reverseswitch terminals 407, 404, 405, 406, wire 169, to post 173, and to ground or negative'feeder.

By shifting drum 800 so as to bring the rollers of board S into engagement with the terminals of set b, Fig. 7, group 2 of Fig. 1 would be produced through the following circuit: beginning with the feeder attached to the terminal 6, passing from thence through roller 4, 3, 7, s, 9, b b, 11 14, 15, 16,

'17, 18, b Z1 1121, b", 23, 24, 25, 26, 27, I128,

the current passes from b to 5, a, through the bridging-wire, Fig. 6, to b 6, 68, 69, 70, 71, 72, and from thence through the cut-out switch, the first motor, and the reversing switch to wire 84, as in group 1, and from thence through 87, 86, 87, wire 88, Fig. 6, 89, 90, 91, 92, 93, 94, 95, 11 b, b, b, &c., as in group 1, to 6 from whence it passes through the bridging-wire to 11 and from thence to terminal 9 and through roller 158, wire 157, 158, through the cut-out switch, the second motor, the reversing-switch, and wire 169 to the terminal 174, as in group 1. By this arrangement resistances 7, 16, 25, 34, 43, 52, and 61 are in series, resistance 70 is paralleled therewith, and all are in series with the first motor, and a similar arrangement of the main resistances is made with the second motor, resistance 156 being parallel with the remaining resistances in series.

By shifting drum 800 so as to bring the rollers of terminal board 7 into contact with set 0 of terminals the arrangement of resistances shown in group 3 of Fig. 1 is produced by the establishment of the following circuit: beginning with c and passing through 5, 4, 3, 7, 8, 9, 0 o c, 0 14, 15, 16, 17, 18, 0 0 0 0 23, 24, 25, 26, 27, 0 c, 0 0 32, 33, 34, 35, 36, 0 0 a 0 41, 42, 43, 43, 44, c, 0 0 c, 50, 51, 52, 53, 54, 0 c, and from thence, Fig. 6, to b, 1, 0, 71, 72. At the same time we pass from 0 over the bridging-wire to 0 and c two parallel circuits being established, as follows: 0 0 59, 60, 61, 62, 63, 0' 0 from thence bridged to b 1, 0', 71, 72, and 6 c", 68, 69, 70,71, 72, and from thence through the motorcut-out switch and the first motor, as in the preceding groups. In this grouping resistances 7, 16, 25, 34, 43, and 52 are in series, while resistances 61 and are parallel therewith, these resistances being in series circuit with the first motor. A similar grouping of the remaining resistances in circuit with the set motor is also produced, as will now be readily apparent.

By shifting drum 800 so as to bring the rollers of board S into successive engagement with sets d, p, f, g, and h the arrangement of resistances may be varied, as indicated in diagrams 4, 5, 6, 7, and 8, Fig. 1, the two motors in each case being in series. By a further movement of drum 800 the rollers of terminal board M may be brought into engagement with set a of the terminals shown in Fig. 7. By this arrangement the motors are paralleled, half of the resistances being in series circuit with each motor, as indicated in group 9 of Fig. 1, the following circuits being established: from a to 5, 4, 3, 7, 8, 9, a a a, (W, 14, 15, 16, 17, 18, a a a, a, 2 24, 25, 26, 27, 66 a, a a 32, 33, 34, 35, 36, a, a a, a 41, 42, 43, 43, 44, a, a, a, a, 50, 31, 52, 54', (L55, (1 ,03 a 59, 60, 61, 62, 63, a, 0 a, a, 68, 69, 70, 71, 72, X, s, Z, 74, 75,76, 77, 7s, 79, 79', 81, 81, 82, 83, 83, 84, 84, 173, 173 to ground or negative feeder. At the same time a parallel circuit is established, beginning at a, through 5, roller 4, roller 87", terminal 86, 87, bridge-wire 88 to 89, thence to terminal ITO 90, thence through 91, 92, 93, 94:, 95, a

is readily apparent, in the same manner as with the rollers of terminal board S. Groups 600 and 601 of Fig. 1 indicate the condition when the motor cut-out switch is thrown so as to cut out one or the other of the motors.

The motor brake-switch consists of two insulated portions W and W, which are preferably hinged upon a common center, portion W being adapted to be drawn into engagement with a pair of terminals U and U,while portion W may be brought into simultaneous Terengagement with terminals V and V. minal U is connected by wire 501 to wire 166, U by wire 500 to wire 168, V by wire 503 with wire 83, and V by wire 502 to wireSl. By swinging the brake-switch W W into engagement with their respective terminals a short circuit is formed from wire 81 over wire 502, terminal V, switch W, terminal V, and wire 503, so as to cutout armature 82 of the first motor, but leaving the current in the feedcoils thereof, and similarly armature 167 is cut out by a short circuit formed between Wires 166 and 168 by wire 501, terminal U, switch W, terminal U, and wire 500.

We claim as our invention- 1. In a motor-controller, the combination with a plurality of electrical resistances forming part of the motor-circuit, of a pair of terminals for each of said resistances, and means for changing bridging connections between said terminals whereby the resistances may be placed in series or any number of said resistances placed in parallel with the remaining series-arranged resistances.

2. Ina motor-controller, the combination with a plurality of electrical resistances forming part of the motor-circuit, of a pair of terminals for each of said resistances, and a single means for changing the bridging connections between said terminals whereby the resistances may be placed inseries or any number of said resistances in parallel with the remaining series-arranged resistances.

3. In a motor-controller, the combination with a pair of motors, of two sets of electrical resistances, connections arranging each set of resistances in serieswith its motor and the motors in series, apair of terminals for each of said resistances, and means for changing bridging connections between said terminals whereby the resistances for each motor may be placed in series or any number of said resistances placed in parallel with the remaining series-arranged resistances.

4. In a motor-controller, the combination with a pair of motors, of two sets of electrical resistances, connections arranging each set with a pair of motors, of two sets of resist ances one for each motor, two pairs-of terminals for each resistance said terminals being arranged in two sets, means for changing bridging connections between one set of said terminals whereby the motors may be placed in series and the resistances of each motor placed in series therewith or any number of said resistances paralleled with the remaining series-arranged resistances,the said bridgingchanging means being such as to form bridging connections between the other set of resistance-terminals to parallel the motors and arrange the resistances of each motor in series therewith or any number of said resistances paralleled with the remaining seriesarranged resistances.

6. In a motor-controller, the combination with a plurality of electrical resistances, of a pair of terminals for each of said resistances, a plurality of group of terminals, bridge-wires connecting certain of the terminals in each group, other bridge-wires connecting other terminals in each group with terminals of another group, and means for causing the resistance-terminals to contact with any group of the plurality of groups of terminals whereby the resistances may be arranged in series or any number of said resistances paralleled with the remaining series-arranged resistances.

7. In a motor-controller, a plurality of terminals arranged in vertical and horizontal groups, other terminals forming part of the group and extending entirely across the same in one direction, bridging-wires connecting certain terminals of each group in series, other bridging-wires connecting terminals of one group with terminals of another group, a plurality of resistances, a pair of terminals for each of said resistances and means for bringing the resistance-terminals into simultaneous engagement with any group of the plurality of terminals whereby, by changing the group in contact, the resistances may be arranged in series or any number of said resistances paralleled with the remaining seriesarranged resistances.

8. In a motor-controller, the combination of a plurality of terminals arranged in vertical and horizontal. groups, other terminals forming part of the group but extending through the same inone direction, bridging connections connecting certain terminals of the vertical groups in pairs, other bridging connections connecting certain of the termi- IIO ries and certain of the resistances connected with the motors in series or any number thereof paralleled with the remaining series-arranged resistances, or the motors may he paralleled and certain of the resistances connected in series with each motor or any numberof resistances paralleled with the remaining series-arranged resistances.

9. In a motor-controller, the combination, with a pair of motors and the feeder-circuits therefor, of two pairs of terminals each pair forming part of one of the motor-circuits and the two pairs being arranged in opposition to each other, a single switch-bar arranged between the two pairs of terminals and provided with means for bridging the terminals of each pair, the arrangement being such that the switch-bar when in its medial position will connect the terminals of each pair and when thrown to one side or the other of the medial position will connect the terminals of one pair or the other without the possibility of disconnecting the terminals of both pairs simultaneously.

10. In a motor-controller, the combination with a pair of motors, and the feeder-circuits therefor, of two pairs of terminals each pair forming part of one of the motor-circuits, and a switch arranged between the two pairs of terminals and adapted when in its medial position to bridge both pairs of terminals and when thrown to either side to disconnect one pair only of the terminals.

In witness whereof we have hereunto affixed our signatures in the presence of the witnesses herein named.

GEORGE E. KRAUSE. ARTHUR L. BOLEN.

\Vitnesses:

II. N. WYATT, A. J. BAILY. 

